| Name | Evolvulus diffusus Chapman |
| Authorship | Chapman |
| Rank | Species |
| Placed in | Evolvulus |
| Remarks | [confirmed] [imported from GBIF] |
| Citation | 1860 Fl. South. U.S. 345 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Evolvulus diffusus Chapman |
| Identification made in | [no date] (2), 2025 (2) |